Average sea water temperature in September:
+59.8°F
| Minimum sea water temperature in September: | 65.3°F |
| Maximum sea water temperature in September: | 54.3°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 64.8°F and 56.3°F.
Monthly sea water temperature in Oslo, °F
Which Norway resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Holmenkollen | 60.7°F | 60.2°F |
| Oslo | 60.7°F | 60.3°F |
| Stavanger | 60.0°F | 59.6°F |
| Ålesund | 57.5°F | 57.3°F |
| Bergen | 56.8°F | 57.3°F |
| Trondheim | 56.0°F | 56.8°F |
| Tromse | 50.4°F | 53.3°F |
Best time for vacation in Oslo
Oslo on a weather map
Places in Norway:
Name
°F
24 Hours Forecast
Oslo
Local time: 04:39
March 17, tuesday
0600
32°F
N
2 mph
2 mph
0900
34°F
N
6 mph
6 mph
1200
39°F
N
9 mph
9 mph
1500
37°F
N
9 mph
9 mph
1800
37°F
N
10 mph
10 mph
2100
37°F
N
10 mph
10 mph
March 18, wednesday
0000
37°F
N
9 mph
9 mph
0300
37°F
N
10 mph
10 mph
